loss of connectivity appears during 2 minutes when layer 3 module N55-M160L3-V2 is detaching from 5596.
Reasons seems that vlan interface are still up, and hsrp also, and chassis take 2 minutes to detect the failure.
Tracking should not help for HSRP as vlan interfaces are still up.
Poweroff module doesn't work in CLI for N55-NM, 5596 is in n5000-uk18.104.22.168.N1.1a
Does anyone have an idea ?
I finally get a reply from CISCO, the module is not hot swappable in the current release (may 2012).
So I confirmed also that for the moment there is no command to shutdown the layer module.
The only way is to shutdown the router and detach the module after.